﻿/*
  Box2D.Net Copyright © 2020 Ben Ukhanov & Hugh Phoenix-Hulme https://github.com/benzuk/box2d-netstandard
  Box2DX Copyright (c) 2009 Ihar Kalasouski http://code.google.com/p/box2dx

// MIT License

// Copyright (c) 2019 Erin Catto

// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:

// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
*/

//#define DEBUG

using System.Runtime.CompilerServices;

namespace Box2D.Net.Collision
{
    /// <summary>
    ///  Used to warm start Distance.
    ///  Set count to zero on first call.
    /// </summary>
    public class SimplexCache
    {
        ///< length or area
        internal ushort count;

        internal byte[] indexA = new byte[3];

        ///< vertices on shape A
        internal byte[] indexB = new byte[3];

        ///< vertices on shape B
        internal float metric;

        public ushort Count
        {
            [MethodImpl(MethodImplOptions.AggressiveInlining)]
            get => count;
        }

        public byte[] IndexA
        {
            [MethodImpl(MethodImplOptions.AggressiveInlining)]
            get => (byte[])indexA.Clone();
        }

        public byte[] IndexB
        {
            [MethodImpl(MethodImplOptions.AggressiveInlining)]
            get => (byte[])indexB.Clone();
        }

        public float Metric
        {
            [MethodImpl(MethodImplOptions.AggressiveInlining)]
            get => metric;
        }
    }
}